J.P. Myers 1974 Tryngitox subroficollis 62 Grid D6, towers (11-18) region, Estancia Medaland, 35 Km S. of Juancho by road, Pto de. Madaiaga, Provincia de Bs. Aires, Argentina 22 November cont'd The caudata 1042-(G1) bird spotted an intruder, from 15 m. we had been watching intruder because it was encroaching. 01-16b began to show signs of supplanting: head begun going up. However it continued feeding, then (its head) went up a bit more, then feed some more. However the feeding direction shifted unquestionably toward the intruder. Intervals of feeding became shorter until finally it raised its head, began running, + flew in a classic helicopter supplantation - body oriented at an angle with respect to ground, not directly towards bird to be supplanted, tail spread, ct. oh well. from above Wagazine 1000 (q)gm censusing for % TB calculation while continuing the grid sample. We know now that 13 birds' territories cinging upon or are entirely contained within the gridded area. 1118 - partial spook. At least 2 ten. birds remained, incl- ding 01-16b. (134 - we should mention that we are fairly certain that 01-16b is the same bird as 11-20-74) A time at which their territory was considerably smaller (see Tryngitox sp. accent) decreases - confident largely because it uses the same perching position, and because some (2) of the borders are the same. 1152 - burst of golden calling; we expected to see a 'spook' but it did not occur. 1256 buffet (20)- 16B future territory less in 16b + is adjacent with 01-16b (a lengthy description of interaction between 01-16b and 20-16b is above) - wandered again into 01-16b territory, who is not visible. but now at 1158 it is back + supplanted. 1300 tool final % TB calculation census. The results are remarkable. During the three hours of censusing (every 15 min) only 3 non-ten. birds were detected at census time. This made for an amazing value of 97% TB!! On the following page (63) of this species is a map of the territories, 13 were present as noted before.